3 years ago

PLEASE HELP ME WITH THIS I NEED IT DONE I'LL GIVE BRAINLIEST!!!!!!

Mathematics

2 answers:

Yuri [45]3 years ago

7 0

Answer:

Correct answer A

Step-by-step explanation:

40% model cars of 45 models is 18 model cars (the rest is model airplanes)

45-18 =27

27 model airplanes

Sophie [7]3 years ago

4 0

These will be the answer

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Graphs of more than one function f(4)=<br> If g(x)=2,x=

Mamont248 [21]

Answer:

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2 years ago

PLZ HELP

Alex

Answer:

The correct option is C ) 109.5°

Therefore,

$m\angle E=109.5\°$

Step-by-step explanation:

Given:

In Triangle DEF

d = 10

e = 18

f = 12

To Find

angle E = ?

Solution:

In Triangle DEF , Cosine Rule says

$\cos E=\dfrac{f^{2}+d^{2}-e^{2}}{2fd}$

Substituting the values we get

$\cos E=\dfrac{12^{2}+10^{2}-18^{2}}{2\times 12\times 10}$

$\cos E=\dfrac{-80}{240}=-\dfrac{1}{3}$

Therefore,

$\angle E=\cos^{-1}(-0.3333)$

$m\angle E=109.5\°$ ............As it is in Second Quadrant

Therefore,

$m\angle E=109.5\°$

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3 years ago

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Afina-wow [57]

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Maru [420]

Answer:

papá fríoStep-by-step explanation:

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